In limit state method, limiting moment resistance (Mu, max) for a given singly reinforced rectangular section for xu = xu, max is ______.
1
Mu, lim = 0.362 fck xu, max (1 - 0.416 xu, max) bd2
2
Mu, lim = 0.447 fck xu, max (d - 0.416 xu, max) b
3
Mu, lim = 0.362 fck xu, max (1 - 0.416 xu, max) bd
4
Mu, lim = 0.362 fck xu, max (d - 0.416 xu, max) b